Aura: Fix resize cursors disappearing for some windows

ui/aura/aura.gyp

 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 108 matching lines @@
         'test_support_aura',
         'aura',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         'test/run_all_unittests.cc',
         'test/test_suite.cc',
         'test/test_suite.h',
+        'desktop_unittest.cc',
         'event_filter_unittest.cc',
         'window_unittest.cc',
         '<(SHARED_INTERMEDIATE_DIR)/ui/gfx/gfx_resources.rc',
         '<(SHARED_INTERMEDIATE_DIR)/ui/ui_resources/ui_resources.rc',
       ],
       # osmesa GL implementation is used on linux.
       'conditions': [
         ['OS=="linux"', {
           'dependencies': [
             '<(DEPTH)/third_party/mesa/mesa.gyp:osmesa',
           ],
         }],
       ],
     },
   ],
 }